KBW (E6) 11/2016 page 113/147
Operation with light cassettes and illumination on: Maximum temperature 60 °C / 140 °F.
Operation with light cassettes and illumination off: Do also NOT operate the chamber at tem-
peratures >60 °C / 140 °F. Otherwise, the lifetime of the fluorescent tubes will be considerably
reduced.
When operating the chamber at temperatures > 60 °C / 140 °F, remove the light cassettes.
18.3 Illumination control
The fluorescent tubes can be turned on and off via operating contacts of the program controller.
For activating the operating contacts please see chap. 7.4, 9.7.3, and 10.6.6.
(third light cassette only
with size 400 and 720)
Figure 19: Control of fluorescent tubes in the light cassettes
Control via operation line “Light Level 1”
Control via operation line “Light Level 2”
By switching the operation lines therefore the following intensities can be obtained:
Operation line “Light Level 1” Off, operation line “Light Level 2” Off 0 % illumination
Operation line “Light Level 1” On, operation line “Light Level 2” Off 40 % illumination
Operation line “Light Level 1” Off, operation line “Light Level 2” On 60 % illumination
Operation line “Light Level 1” On, operation line “Light Level 2” On 100 % illumination
When operating the chamber with illumination: Restricted temperature range 20 °C / 68 °F to
60 °C / 140 °F,
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